Hoop-forming machine.



R. RICHARDSON. HOOP FORNHNG MACHINE. APPLICATION FILED ocT. 25, 1915.

Patent-ed May16,1916.

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H. RICHARDSON.

HOOP FORNHNG MACHINE.

APPLICATION HLED 001.25, 1915.

Patented May 16, 1916.

2 SHEETS-SHEET 2- Vso FFIQE.

RICHARD RICHARDSON, OCE HALIFAX, NOVA SCUTIA, CANADA.

'HOOP-FORMING. MACHINE.

Application tiled October 25,1915.

compact in construction thereby occupying" a minimum of space, tosimplify the construction and reduce the number of working parts, topermit of the several parts being easily gotten at for inspection, or incase of- 4renewal, and generally to adapt the several parts to betterperform the functions required of them, and it consists essentially ofthe improved machine particularly described and set forth in thefollowing specification and accompanying drawings forming part of thesame.

In the drawingsz' Figure 1 is a side elevation of the improved hoopmachine. Fig. 2 is an end elevation of the same. Fig. 3 is an enlargeddetail of the means for adjusting the bending wheels and the beltcarried thereby. Fig. 4; is a transverse section on the line 2-2 of Fig.3.

Like characters of reference refer to like parts in the severaldrawings.

Referring to the drawings, A represents.

the improved machine comprising the frame 10 provided at one end with alongitudinally extending slot 11 designed to house the lower offset armof the L-shaped bracket 12. It is desirable that this bracket shouldbecapable of horizontal adjustment, and to this end the set screw 13 isthreaded in the frame and rotatably engaged at the end to the bracket12'to ,which it is secured by the collar 14 or in any other suitablemane ner.

The bracket 12 is provided with a longitudinally extending slot 15 inthe lower arm designed to slidably carry the bearing 16 therein, whichis adapted to be moved in a horizontal direction under the action of theset screw 17 threaded in the said bracket and contacting at its pointwith one end of the spiral spring 18, the other end of which engages arecess 19 in the said bearing. The

Specification of Letters Patent.

Patented May 16, 1916.

Serial No. 57,735.

vertical arm of the bracket 12 is also provided with a slot 20 adaptedto slidably carry the bearing 21 adapted to be vertically adjusted bythe set screw 22, making threaded engagement with the upper end of thesaid bracket, and coacting at its lower end with the spring 23 which inturn engages the upper end of the bearing.

`In the embodiment illustrated, the bearing 16 carries a stub spindle2li: provided intermediate of its length with a collar 25 designed toengage with the inner face of the bearing and provided with a threadedouter end with which the nut 26 engages to rigidly secure the spindle inposition. The overhanging end of the spindle 24: carries a flangedcorrugated bending wheel 27 rotatably mounted thereon adapted tocooperate with the pressure roller 28 rotatably carried by the bearing21 and located between the flanges of the bending wheel.

That end of the frame 10 remote from the bracket 12 carries a shaft 29rotatably mounted therein provided on one end with a flanged corrugatedbending wheel 30 and on the other end with a pinion wheel 31 designed tomesh with the pinion wheel 32 mounted on the spindle 33 rotatablycarried by the frame, the said spindle having a belt pulley 34 mountedon its outer end adapted to be driven from any suitable source of power.

(lo-acting with the under side of the bending wheel 30 is a pressureroller 35 rotatably supported in the bearing 36, adjustably mounted inthe bracket 37 formed integral with thel frame and capable of beingmoved in a vertical directionby the set screw 38` making threadedengagement with the said bracket and engaging one end of the spiralspring 39, the other end of which engages the bearing.

The bending wheels 27 and 30 are connected by a belt l0 of steel or likeresilient material passing therearound, which ene gages on its outerface with` the pressure rollers 28 and 35.

In the operation of the machine, rotary motion is transmitted to thepulley 34 which through the coacting gearing 32 and 31 rotates thebending wheel 30 and drives the belt 40, and the corrugated rollers 28and are then adjusted until they exert the desired pressure on the saidbelt. The strips of wood or metal previously cut to the desired lengthsare fed between the belt 40 and the bending wheels 27 and 30 and soformed. It will be appreciated that it is only neces- .sary to engagethe point of the strip of wood or metal between the belt 40 and itscoacting bending wheel and since the bending wheels are flanged the saidstrips cannot get out of alinement with the belt. These strips are fedalternately to one end of the machine and then to the other and thisoperation is performed by a single attendant. As the bent strips travelalong the belt 40 they contact with the discharge plate l1 carried bythe frame 10 and located between the inner faces of the belt, and arethereby thrown laterally from the machine.

It will be clear that should the belt 40 require tensioning, this can beaccomplished by adjusting either of the set screws 13 or 17, the formercontrolling the L-shaped bracket 12 and the latter the movement of thebearing 16.

Should it be so found desirable to exert a greater pressure between thebelt 40 and the bending wheels 27 and 30, the rollers 28 and 35 areadjusted by their respective set screws to obtain the desired result.

The function of the flanges on the bending wheels 27 and 30 is toprevent displacement of the belt Ll0, and strips of wood being bentwhich are subjected to an even pressure-so that the hoops bent areuniform.

Since different sizes of hoops will be bent in one machine, the bendingwheels are capable of being replaced by wheels of larger or smallerdiameter.

l/Vhat I claim as my invention is:

l. In a machine of the class described and in combination, a frame,flanged bending wheels mounted on the opposite ends thereof, a beltpassing around and operatively connecting the said wheels,d means formoving one of the wheels longitudinally of the frame to adjust thetension of the belt, means for rotating the other wheel, and a dischargeplate mounted on the frame and located between the inner faces of thebelt.

2. In a machine of the class described and in combination, a framehaving a slot in one end thereof, an L-shaped bracket provided with alower odset arm slidably engaging the said slot, a bending wheelrotatably supported by the lower arm of the said bracket, a secondbending wheel mounted on the opposite end of the frame, a belt passingaround and operatively connecting the bending wheels, means for rotatingthe second bending wheel, and means for moving the L-shaped bracketlongitudinally of the frame to adjust the tension of the belt.

3. In a machine of the class described and in combination, flangedbending wheels mounted on the opposite ends thereof, a belt passingaround and operatively connecting the said wheels, an adjustablepressure roller located between the flanges of each of the wheels toengage the belt, the rollers being arranged on diametrically oppositesides of the wheels, means for vertically adjusting the pressurerollers, means for moving one of the bending wheels longitudinally ofthe frame to adjust the tension of the belt, and means for rotating theother bending wheel.

4. In a machine of the class described and in combination, a frame, anL-shaped bracket slidably mounted therein provided with a longitudinallyextending slot in the lower arm, a bearing slidably mounted in the saidslot, a bending wheel rotatably supported by the bearing, a secondbending wheel rotatably supported at the opposite end of the frame, abelt passing around and operatively connecting the bending wheels, j j

means for rotating the second bending wheel and means for moving thebearing in a longitudinal direction to adjust the tension of the belt.

5. In a machine of the class described and in combination, a frame, anL-shaped bracket slidably mounted therein provided with a verticallydisposed slot in its vertical arm, a bearing slidably mounted in theslot, a bending wheel carried by the L-shaped bracket, a bending wheelrotatably mounted on the opposite end of the machine, a belt passingaround the bending wheels, a pressure roller carried by the saidbearing, a set screw making threaded engagement with the upper end ofthe L-shaped bracket, a spiral spring located between the set screw andthe bearing and means for rotating the bending wheels.

G. In a machine of the class described and in combination, a frame,corrugated bending wheels mounted on the opposite ends of the frame, abelt taking around the said wheels, means for adjusting the tension ofthe belt and pressure rollers coperating with the pending wheels, as andfor the purpose speci- In witness whereof I have hereunto set my hand inthe presence of two witnesses.

RICHARD RICHARDSON.

Vitnesses:

R. R. BLACK, E. C. A. REED.

Copies of this patent may he obtained for ve cents each, by addressingthe Commissioner of Patents, Washington, D. G.

